Demo Update and localization for Spanish, Portuguese, German and Chinese!

V0.8.6 Demo Update

New Features
- Added support for languages: Chinese, Spanish, German, Portuguese
- Added new biome: Cave
- Added new music for biomes
- Unlocked Tier 0 in Skill Tree
- Added tutorial
- Added zoom option on battlefield (mouse wheel)
- Added manual camera mode on battlefield (right click)
- Added battle speed options
- Added new mechanics: Parry, Block
- Added new Ultimate: Blade Dance
- Added Named Orcs that drop special items

Major Changes
- Revamped UI
- Revamped items and shop